A critical review on the separation of heavy metal(loid)s from the contaminated water using various agricultural wastes

Younas, Fazila; Younas, Sadia; Bibi, Irshad; Farooqi, Zia Ur Rahman; Hameed, Muhammad Ashir; Mohy-Ud-Din, Waqas; Shehzad, Muhammad Tahir; Hussain, Muhammad Mahroz; Shakil, Qamar; Shahid, Muhammad; Niazi, Nabeel Khan

doi:10.1080/15226514.2023.2242973

Cited by 12 publications

(2 citation statements)

References 220 publications

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“…Various methods are used for removing Cr(VI) substances from wastewater, industrial waters, surface water, and drinking water were reported in the literature [10][11][12][13]; for instance, conventional treatment methods, such as chemical precipitation, re commonly used for the removal of chromium from industrial effluents, such as tannery wastewater [14][15][16][17][18][19][20][21][22]. Using this method, other various substances can be separated in addition to chromium.…”

Section: Introductionmentioning

confidence: 99%

Removal of Chromium (VI) from Water Using Orange peel as the Biosorbent: Experimental, Modeling, and Kinetic Studies on Adsorption Isotherms and Chemical Structure

Khalfaoui,

Benalia,

Selama

et al. 2024

Water

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The present work aims to assess the effectiveness and efficiency of orange peels as a low-cost biosorbent for removing Cr(VI) from an aqueous solution by the biosorbent process. The orange peels as adsorbent was characterized using different methods, such as FTIR, pHpzc, equilibrium pH, TGA, XRD, SEM, and (BET). The tests were conducted in the batch mode, and the effects of different parameters, such as the pH, dosage of the bioadsorbent, influent Cr(VI), and time, on the biosorption of Cr(VI) were investigated. The adsorption kinetics proved that a contact time of 90 min resulted in the highest (approximately 97.8%) Cr(VI) removal, with an adsorption capacity of 4.96 mg/g. Moreover, the increase in the biosorbent dosage (from 1 to 10 g/L) resulted in the enhancement in the Cr(VI) removal effectiveness. Moreover, the pH of the solution also affected significantly the effectiveness of the removal. The tests were conducted under acidic pH solution conditions, and the prediction of the pH value at a zero charge (pH pzc) was confirmed experimentally. Furthermore, the results from the batch-mode assays were successfully tested by an experimental design (full factorial design). The biosorption of Cr(VI) on orange peels occurred mostly according to the pseudo-second-order kinetic model and the uptake of Cr(VI) was satisfactorily described by the Langmuir model.

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Section: Introductionmentioning

confidence: 99%

Removal of Chromium (VI) from Water Using Orange peel as the Biosorbent: Experimental, Modeling, and Kinetic Studies on Adsorption Isotherms and Chemical Structure

Khalfaoui,

Benalia,

Selama

et al. 2024

Water

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“…Cd toxicity negatively affects plant functioning by inhibiting carbon fixation, reducing chlorophyll synthesis and minimizing photosynthetic activity [10]. Cd-induced phytotoxicity leads to plant morphological alterations, such as chlorosis and the suppression of lateral root formation [11]. Additionally, Cd exposure induces osmotic stress in plants by reducing relative leaf water content, stomatal conductance and transpiration, ultimately leading to tissue damage [12].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Microbial-Assisted Remediation of Cadmium-Contaminated Soil

Zulfiqar,

Haider,

Maqsood

et al. 2023

Plants

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Soil contamination with cadmium (Cd) is a severe concern for the developing world due to its non-biodegradability and significant potential to damage the ecosystem and associated services. Industries such as mining, manufacturing, building, etc., rapidly produce a substantial amount of Cd, posing environmental risks. Cd toxicity in crop plants decreases nutrient and water uptake and translocation, increases oxidative damage, interferes with plant metabolism and inhibits plant morphology and physiology. However, various conventional physicochemical approaches are available to remove Cd from the soil, including chemical reduction, immobilization, stabilization and electro-remediation. Nevertheless, these processes are costly and unfriendly to the environment because they require much energy, skilled labor and hazardous chemicals. In contrasting, contaminated soils can be restored by using bioremediation techniques, which use plants alone and in association with different beneficial microbes as cutting-edge approaches. This review covers the bioremediation of soils contaminated with Cd in various new ways. The bioremediation capability of bacteria and fungi alone and in combination with plants are studied and analyzed. Microbes, including bacteria, fungi and algae, are reported to have a high tolerance for metals, having a 98% bioremediation capability. The internal structure of microorganisms, their cell surface characteristics and the surrounding environmental circumstances are all discussed concerning how microbes detoxify metals. Moreover, issues affecting the effectiveness of bioremediation are explored, along with potential difficulties, solutions and prospects.

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Green Nanoengineered Keratin Derived Bio‐Adsorbent for Heavy Metals Removal from Aqueous Media

Zubair,

Roopesh,

Ullah

2024

Advanced Sustainable Systems

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Exploiting poultry chicken feathers, a keratin‐rich by‐product offers a sustainable raw material for bio‐adsorbents in water remediation. This study developed a bio‐adsorbent from chicken feathers keratin (CFK), functionalized with surface‐modified graphene oxide (SMGO). The bio‐adsorbent was tested for adsorbing metal cations (Pb, Cd, Ni, Zn, Co) and oxyanions (As, Se, Cr) from water contaminated with 600 µg/L of each metal at pH 5.5, 7.5, and 10.5. Results showed optimal removal efficiencies at pH 7.5, with anions achieving ≥91.10% for As (III), ≥89.55% for Cr (VI), and ≥74.33% for Se (IV). Cations removal reached 96.34% for Co (II), 97.36% for Ni (II), 99.03% for Cd (II), 99.21% for Pb (II), and 59.06% for Zn (II). Kinetic studies indicated rapid initial uptake within the first 6 hours, reaching equilibrium at 24 hours. The bio‐adsorbent maintained high adsorption capacities over four regeneration cycles with minimal efficiency loss, showing strong stability and reusability. Removal efficiency followed the order: Pb (II) 〉 Cd (II) 〉 Ni (II) 〉 Co (II) 〉 Zn (II), correlating with their ionic radii. Ni2+ adsorbed more effectively than Co2+ due to a smaller ionic radius and stronger electrostatic attraction. These findings highlight CFK‐SMGO's efficacy in wastewater treatment, promoting bio‐based sustainable adsorbents.

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A critical review on the separation of heavy metal(loid)s from the contaminated water using various agricultural wastes

Cited by 12 publications

References 220 publications

Removal of Chromium (VI) from Water Using Orange peel as the Biosorbent: Experimental, Modeling, and Kinetic Studies on Adsorption Isotherms and Chemical Structure

Removal of Chromium (VI) from Water Using Orange peel as the Biosorbent: Experimental, Modeling, and Kinetic Studies on Adsorption Isotherms and Chemical Structure

Recent Advances in Microbial-Assisted Remediation of Cadmium-Contaminated Soil

Green Nanoengineered Keratin Derived Bio‐Adsorbent for Heavy Metals Removal from Aqueous Media

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